OpenCV使用SimpleBlobDetector时报错：Segmentation fault (core dumped)

解决方法

原本的代码

import cv2
import numpy as np;

params = cv2.SimpleBlobDetector_Params()
detector = cv2.SimpleBlobDetector(params)
detector.empty() # <- segfault
keypoints = detector.detect(image) # <- segfault

好使的代码

import cv2
import numpy as np;

params = cv2.SimpleBlobDetector_Params()

ver = (cv2.__version__).split('.')
if int(ver[0]) < 3 :
    detector = cv2.SimpleBlobDetector(params)
else : 
    detector = cv2.SimpleBlobDetector_create(params)

detector.empty() # <- now works
keypoints = detector.detect(image) # <- now works

问题

貌似不同版本的OpenCV能用的函数不一样